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Boost Coverter(TPS61221) / PFM mode operation without audible freaquency

Ryuji
Guru 20090 points
Other Parts Discussed in Thread: TPS61221
Hello,
 
Are there any device which has below specifications ?
 
<Specifications>
-Electrical Specifications is same with (similar with ) TPS61221
-need PFM mode. PFM frequency don't decrease under the audible frequency.
  Our customer can't use the device with audible frequency.
 
<Back Ground>
We proposed TPS61221 to our customer , but they asked PFM mode Frequency to us.
They said the competitor has the device which has PFM mode without Audible Frequency..
Application is consumer application.
If you contact to me by e-mail , I can give the detail information.
 
Best Regards,
Ryuji Asaka
  • 0
    TI__Intellectual 2370 points

    Hi Ryuji Asaka:

        I try to write mail to you ,but I can not find your address through outlook.....strange...............

       The PFM ripple frequency could be related to the load,Cout and inductance.

       Do you know the input ,output voltage,Iout of customer application?I can do some test on bench to verify it.Do you know the competitor part number?

        I can be reached via jim-chen@ti.com